Machine for rolling metal i-beams, channel-beams, &amp;c.



No. 709,083. 'Patented sept. I6, wuz.

' w. A. DUNN.

MACHINE FOR RLLIN'G M-ETAL IBEAMS, CHANNEL BEAMS, 8m.

(Application 1ed Ja.n. 3, 1902.)

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L Patented Septl I6, 1902..'

No. 709,083] i w. A. umm.v

MACHINE FDR ROLLING METAL I-BEAMS,CHANNEL,BEANS, Sac.

(Applicion filed Jan. s, 1902.)

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No. 709,083. E Patented YSupt'. I6, 1902.. w. A.- DUNN.

MACHINE Fon ROLLING METAL l-BEA'MS', CHANNEL BEANS', 8m.

L l (Application med Jan. 3, 1902.)

(N o M o d e'l.)

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UNITE STATES WILLIAM ABERCROMBIE DUNN, OF SMITHVILLE, MINNESOTA, ASSIGNOR OF ONE-HALF ATI-IOL MORTON MILLER, OF DULUTII, MINNESOTA.

MACHINE FOR ROLLING METAL I-BEAiVIS, CHANNEL-BEAIVIS, 86o.

SPECIFICATION forming part of Letters Patent No. l709,083, dated September 16, 1902.

Application iiled January 3| 1902.` Serial No. 88,3011'. (No model.)

,To a/ZZ whom t may concern,.-`

Beit known that LWILLIAM ABERCROMBIE DUNN, a citizen of the United States, residing at Smithville, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Machines for Rolling Metal I-Beams, Channel-Beams, dre.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved rollermill designed for the further treatment of metal I-beams, channel-beams, and the like which have previously been partly formed in a shaping-mill, such as the type forming the subject-matter of an application for patent filed by me January 3, 1902, Serial No. 88,302.

The object of my invention is the production of a roller-mill adapted for use intermediately between the shaping and the finishing mills of a metal-rolling plant and possessing many advantages, among which may be mentioned simplicity and durability of construction, reliability in operation, and increased capacity.

The following description sets forth clearly the details of construction and operation, and in connection with such description attention is called to the accompanying drawings, in which- Figure 1 isa side elevation of a rolling-mill embodying my invention. Fig. 2 is a front elevation. Fig. 3 is a rear elevation. Fig. 4 is alongitudinal sectional View. Fig. 5 is an enlarged detail plan view of the carrier for the sido rolls. Figs. 6 and '7 are enlarged detail Views of one of the side rolls and its support. Figs. 8 and 9 are enlarged views of the rolls for reducing I-beams. Figs. 10, 11, 12, and 13 are enlarged views of the rolls for reducing channel-beams.

Referring to the drawings by numerals, 1 1 denote the foundations upon which are erected the frames or housings 2 2 for'the Webrolls 3 4, and the frames or housings 5 5 of the flange-rolls 6 7, the latter being arranged immediately t0 the rear of the webrolls, as indicated more clearly in Figs. 1 and 4. The

lower web-roll 3 is mounted horizontally, the

' in the pinion-opening.

necks thereof being journaled in fixed bearings, which are provided with brasses adjustable through the medium of set-bolts 8 8 to compensate for wear and to maintain the roll centrally and in alinement with the upper roll 4. ,l

`9 designates the bearing for the upper roll, which is similarly provided with brasses adjustable by set-bolts 10 10 and which is ver- 6o `tically movable in the frames or housings 2 `which is connected one end of a lever 13, fulcrumed to a bracket 14, depending from the bottom of the housing and having connected to its other end a Weight 15. The weight is shown adjustable, whereby t0 exactly coun- 75 terbalance the weight of the upper roll 4. The upper roll is depressed and elevated through the medium of screw-rods 16, each of which is swiveled at its lower end to one of the bearings and engages at its threaded portion 8o a threaded opening in the top of the housing.

The upper end of the rod 16 is of square or preferably octagonal form in cross section, and fitting thereon is a pinion 17, the teeth of which are engaged by a Worm 18, keyed to 8 5 a shaft 19. The rotation of the pinion operates through the screw-rod to raise and lower the upper roll, the screw-rod being slidable By reference to Fig.

2 it will be seen that the ends or necks of the 9o upper roll are moved in unison, each bearing being similarly connected to a screw-rod provided with a pinion meshing with a worm on the shaft 19. On the shaft 19 is keyed a bevel gear-wheel 20, which meshes with abevel gear-wheel 21, fixed toashaft 22,the purpose of which will be presently explained. The shaft 19 is connected with a suitable source of power. (Not shown.) Therolls 3 4 are of similar form, being provided with a cylinroo drical periphery which in practice acts against the web of the beam and with slightly-beveled sides which act upon the inner surfaces of the anges of the beam. The outer surfaces of the beam-anges are acted upon by vertical rolls 23 23, the construction of which I will now describe. In side extensions 24 24 of the housings are slidably mounted horizontally-movable carriages 25, which form the lateral supports for the vertical rolls 23. Each carriage is guided in its movement by dovetail connections with the extensions, and said carriages and rolls are advanced simultaneously with the adjustment of the upperroll 4 byscrew-rods 26 26,which are driven through connection with the shaft 19, the screw-rods being provided with pinions 27 27, meshing with worms 28 28 onashaft 29,which shaft is operatively connected with the shaft 19 through the bevel-gearing 30, shaft 3l, and bevel-gearing 32. By reference to Fig. 1 it will be seen that the carriages 25 25 are both connected with the shaft 19 and are operated in unison to move both vertical rolls simultaneously with the upper roll 4.

Referring again to Fig. 1, and more especially to Fig. 5, it will be observed that two feed screw-rods are employed to each carriage and that said rods are disposed equidistantly from the center of the carriage, and consequently the center of the roll. By this arrangement the carriage is firmly held against turning, and the strain exerted by the backward thrust of the roll is evenly distributed. The carriage, as above stated, forms the lateral support for the roll, which latter is rotated by the metal as it passes through the mill. To reduce friction between the roll and carriage, which is recessed to receive the roll, l provide vertically-disposed bearing-rollers 33 33, the reduced ends of which are journaled in upper and lower plates 34. The roll contacts with the bearing-rollers, and between the rear of the latter and the carriage I preferably interpose a removable wear-plate 35.

36 36 designate longitudinal bars forming side guides for the movement of the metal. The vertical rolls 23 are each supported on a spindle 37, formed, preferably,integrally with and extending vertically from a saddle 38, which straddles the neck of the lower roll 3 and is supported by the housing at the sides of the lower bearing. The spindle 37 fits a corresponding opening 39 in the roll, and the latter freely rotates thereon. The saddle is adjustably connected with the carriage 25 through the medium of bolts and nuts 40 41, there being two bolts for each saddle. On the saddle at each side of the spindle is a bracket-arm 38', having in its outer side a horizontally-disposed dovetail groove, which grooves receive the dovetailed ends of the side guide-bars 36. The guide-bars are each formed in sections, and their inner ends approach as closely as possible to the rolls. The metal in passing-between the rolls is directed by a bottom guard 42, which consists of a plate mounted at its outer end on a square shaft 43, secured in the housings against turning and held against endwise movement by a set-collar 44. The inner end of the guard-plate rests on the lower roll 3. At the opposite side is a similar guard-plate 45, supported by a square shaft 46. Obviously by employing different sizes of. guard-plates for different sizes of beams the same shafts may be employed.

47 designates a top guard for the metal, consisting of a plate mounted near its outer end on a shaft 48. The inner end of the guard is elevated against the periphery of the upper roll by a weighted lever 49, fulcrumed at 50 and connected at its inner end to the inner end of the guard. The weight 5l is adjustable on the outer end of the lever. The metal after passing between the rolls 3 4 23 23 is directed, by means of the guides 36 and by guard-plates 52 53 on the housings 5 5, to horizontal rolls 6 7, by which latter the flanges of the beam are rolled to the proper depth. Each of the rolls is provided with outer narrow cylindrical surfaces 56 56, which-Work upon the tops of the anges, and with adjacent beveled portions 57 57, which work upon the bottom of the flanges. Rims 58 58 engage the web during the passage of the beam, and thereby control the ange. Between the rims each roll is cut away to remove unnecessary pressure from the web. The rims are formed separately from the portions 56 and shaft of the roll, being keyed thereto, as shown in Fig. 9, and held against lateral movement by the central spacing-sleeve 59, which latter is secured to the roll-shaft in any suitable manner. By this construction the roll portions 56 may be used regardless of the size of beam, and rims of different sizes may be readily inserted as required. The upper roll, which is counterbalanced similarly to the upper roll 4, is adjusted by screw-rods 60, operated by a pinion 61, worm 62, shaft 62', bevelgearing 63, shaft 22, the bevel-gearing 20 21, and the shaft 19. The side guides 36 in addition to being supported by the saddles 38 in the manner before described are braced by bars 64 64, secured thereto and to arms 65 65, attached to bars 66 66, xed to the carriages 25. The guides have each a pivoted extension 67, which directs the metal between the beamfiange rolls, and to adj ust said guide extensions to extend outwardly previously to the passage of the metal there is provided the following means: Attached to each guide-extension end is a screw-rod 68, which engages a threaded box 69 on the housing and which is squared intermediately for connection with a sprocket-wheel 70. This wheel is connected by a chain 71 with a sprocket-wheel 72 on the shaft 62', whereby upon the rotation of the latter the screw-rod is turned to move the guide extension. The rods 68 68 are right and left threaded and are simultaneously operated to move the guide extensions to and from each other. The gear-wheels are so proportioned with reference to the gear- IOO IIO

wheels 72 as to cause the guide extensions to travel at approximately double the speed of the guides 36, whereby said extensions may separate at the proper time to readily admit the metal to the rolls. In the nal pass of the beam the guide extensions are adjusted to provide a very slight clearance between them and the beam-flanges, and thus direct the-beam properly to the finishing-mill.

Figs. 8 and 9 respectively illustrate by enlarged views the beam-rolls and the flangerolls. In Figs. 10, 11, 12, and 13 Ihave shown the form of rolls employed in making channel-beams. The `channel-beam coming from the shaping-mill is formed with the upper corners slightly beveled, whereby the outer surface of the beam-Web is readily controlled. The web-rolls73 74 and the flange-rolls 75 76 are adjusted as shown in Figs. 10 and 11 for the first pass, and Figs. 12 and 13 show the adjustment of the rolls for the final pass.

The outer beveled portions 77 of the dangerolls in practice work the upper corners of the beam-flanges. r

I claim as my invention- In a mill of the class described, the combination with beam-web rolls and side rolls, of rolls located to the rear of the `aforesaid rolls having projecting narrow roller rim portions flanking a reduced central portion said rims adapted to exert roller-pressure against the beam-web at the flanges, and outer cylindrical roller-surfaces and beveled roller portions extending from the cylindrical rollersurfaces to the rim portions for respectively working the edges and inner faces of the beam-flanges.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM ABERCROMBIE DUNN.

Witnesses:

W. T. NORTON, F. L. BROWNE. 

